Networkable VAV Controller
Specification and Installation Instructions
www.neptronic.com EVCB Standard Page | 2
Controller Specifications
Description EVCB Se
ies
Torque 70 in.lb. [8 Nm] at rated voltage
Power consumption 10 VA max
Running time through 90º 90 seconds
Power supply 22 to 26 Vac 50/60 Hz
Inputs
2 Universal inputs (Thermistor 10KΩ Type 3, digital 24Vac/dry contact, or 0-10Vdc)
2 digital inputs
On-board differential pressure sensor 0-1.0” WC (available on pressure independent models)
Outputs
2 analog outputs (0-10 Vdc or 2-10Vdc; selectable)
Up to 4 TRIAC outputs 24 Vac, 500mA max thermal fuse in series with each TRIAC output (on/off, pulse,
or 2 floating outputs)
Real Time Clock Real-time clock (RTC) with super capacitor backup (approximately 3 days)
BACnet BACnet
MS/TP @ 9600, 19200, 38400 or 76800 bps (B-ASC)
Modbus
Modbus RTU slave @ 9600, 19200, 38400 or 57600. Selectable parity and stop bit configuration:
No parity, 2 stop bit | Even parity, 1 stop bit | Odd parity, 1 stop bit
Communication connection
24 AWG twisted-shield cable (Belden 9841 or equivalent).
Maximum 50ft (15m) between controller and thermostat
Electrical connection 0.8 mm
[18 AWG] minimum
Operating temperature 0ºC to 50ºC [32ºF to 122ºF]
Storage temperature -30ºC to 50ºC [-22ºF to 122ºF]
Relative Humidity 5 to 95% non condensing
Weight 1.8 kg. [4 lb]
The actuator performs an auto-stroke on power up. When changing the actuator adjustment screws, cycle power to initiate the
auto-stroke.
EVC with a built-in 70 in. lb.
Dimensions
A = 2.85” | 73mm
B = 4.85” | 123mm
C = 1.00” | 24mm
D = 2.36” | 60mm
E = 3.27” | 83mm
Thermostat Specifications
Description TRL24 and TDU Series
Temperature Sensor (TRL24 and TDU)
Setpoint range
10ºC to 40ºC [50ºF to 104ºF]
Control accuracy
Temperature: ±0.4ºC [0.8ºF]
Display resolution
±0.1ºC [0.2ºF]
Humidity Sensor (TRLH24, TRLGH24 and TDU models with Humidity Sensors)
Sensor range
5 to 95%RH
Display resolution
0.1%
CO
2
Sensor (TRLG24, TRLGH24 and TDU models with CO
2
Sensors)
Operating principle
Self-calibrating, Non-Dispersive Infrared (NDIR)
Sensor Range
0 to 2000 ppm
Setpoint range
100 to 2000 ppm
Accuracy
±30 ppm ±3% of reading
Response time
2 minutes by 90%
Display resolution
1 ppm
Othe
Electrical connection 3 wires to VAV controller and 2 wires to BACnet/Modbus network | 0.8 mm
[18 AWG] minimum
Network service port Mini USB connector
Power supply 24Vac
Power consumption 1VA
Operating temperature 0ºC to 50ºC [32ºF to 122ºF]
Storage temperature -30ºC to 50ºC [-22ºF to 122ºF]
Relative humidity 5 to 95 % non condensing
Enclosure protection IP 30 (EN 60529)
Weight 120 g. [0.25 lb]
C
A
B
D
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